LCD wiki E32R28T 2.8inch ESP32-32E Nuni Module Manual

Jagorar albarkatun ya ƙunshi sampshirye-shirye, dakunan karatu na software, ƙayyadaddun samfur, zane-zane, zane-zane, ƙira, littattafan mai amfani, da software na kayan aiki.
Wannan sashe yana ba da ƙarewaview na kayan aikin hardware da ake samu akan module.

Yayi bayani dalla-dalla zane-zane na ƙirar nuni.
Yana ba da matakan kariya da za a ɗauka yayin amfani da tsarin nuni.

Bayanin albarkatu

Ana nuna kundin adireshi a cikin adadi mai zuwa:

Jagora	Bayanin Abun ciki
1-Demo	A sampLe program code, ɗakin karatu na software na ɓangare na uku wanda sampshirin ya dogara da, maye gurbin ɗakin karatu na software na ɓangare na uku file, daftarin aiki na saitin ci gaban software, da sampda umarnin shirin daftarin aiki.
2-Ƙayyadaddun bayanai	Nuni samfurin ƙayyadaddun samfur, ƙayyadaddun allo na LCD da lambar ƙaddamarwa direba IC LCD nuni.
3-Tsarin_Tsarin	Nuna girman samfurin samfurin da zanen 3D na samfur
4-Takardar bayanai	LCD nuni direban ILI9341 littafin bayanai, juriya tabawa direba XPT2046 data littafin, ESP32 master data littafin da hardware zane daftarin aiki, USB zuwa Serial IC(CH340C) bayanai littafin, audio littafin ampliifier guntu FM8002E littafin bayanai, 5V zuwa 3.3V littafin bayanan bayanai da sarrafa cajin baturi Chip TP4054 takardar bayanai.
5-Tsarin tsari	Tsarin kayan masarufi, ESP32-WROOM-32E module IO tebur rabon albarkatu, tsari, da fakitin bangaren PCB
6-Mai amfani_Manual	Takardun mai amfani da samfur
7-Tool_software	WIFI da Bluetooth sun gwada APP da kayan aikin gyarawa, USB zuwa direban tashar jiragen ruwa, ESP32 Flash download kayan aikin software, software mai ɗaukar hoto, software na ɗaukar hoto, software na sarrafa hoto JPG da serial port debugging kayan aikin.
8-Saurin_Farawa	Bukatar ƙone kwandon file, filashi kayan aikin zazzagewa, kuma yi amfani da umarnin.

Umarnin Software

Matakan haɓaka software na nuni sune kamar haka:

A. Gina ESP32 dandali na ci gaban software.
B. Idan ya cancanta, shigo da dakunan karatu na software na ɓangare na uku a matsayin tushen ci gaba;
C. Bude aikin software don gyarawa, ko kuma kuna iya ƙirƙirar sabon aikin software.

D. iko akan tsarin nuni, tara kuma zazzage shirin gyara kurakurai, sannan duba tasirin aikin software.
E. Tasirin software bai kai ga abin da ake tsammani ba, ci gaba da canza lambar shirin, sannan a tattara da zazzagewa, har sai tasirin ya kai yadda ake tsammani.
Don cikakkun bayanai game da matakan da suka gabata, duba takaddun a cikin 1 Demo directory.

Umarnin Hardware

Ƙarsheview Ana nuna albarkatun kayan aikin module

Ana nuna albarkatun kayan masarufi a cikin adadi biyu masu zuwa:

An bayyana albarkatun kayan aikin kamar haka:

LCD

Girman nunin LCD shine inci 2.8, direban IC shine ILI9341, kuma ƙuduri shine 24 0x 32 0. An haɗa ESP32 ta amfani da hanyar sadarwar SPI mai waya 4.

A. Gabatarwa zuwa mai sarrafa ILI9341 Mai sarrafa ILI9341 yana goyan bayan matsakaicin ƙuduri na 240*320 da 172800-byte GRAM. Hakanan yana goyan bayan 8-bit, 9-bit, 16-bit, da 18-bit daidaitattun bayanan bayanan tashar jiragen ruwa. Hakanan yana goyan bayan 3-waya da 4-waya SPI serial ports. Tunda sarrafawar layi daya yana buƙatar adadi mai yawa na tashoshin I/O, wanda ya fi kowa shine sarrafa tashar tashar jiragen ruwa ta SPI. ILI9341 kuma yana goyan bayan nunin launi na 65K, 262K RGB, launin nuni yana da wadatar gaske, yayin da yake tallafawa nunin juyawa da gungurawa da sake kunna bidiyo, da nunawa ta hanyoyi daban-daban.
The ILI9341 controller uses 16bit (RGB565) to control a pixel display, so it can display up to 65K colors per pixel. The pixel address setting is performed in the order of rows and columns, and the incrementing and decreasing direction is determined by the scanning mode. The ILI9341 display method is performed by setting the address and then setting the color value.

B. Gabatarwa ga ka'idar sadarwa ta SPI

Yanayin rubutu na bas SPI mai waya 4 ana nuna shi a cikin adadi mai zuwa:

CSX zaɓin guntu na bawa ne, kuma guntu za a kunna shi ne kawai lokacin da CSX ya kasance a ƙaramin ƙarfi.

D/CX shine fil ɗin sarrafa bayanai/ umarni na guntu. Lokacin da DCX ke rubuta umarni a ƙananan matakai, ana rubuta bayanai a manyan matakai
SCL shine agogon bas na SPI, tare da kowane gefen tashi yana watsa 1 bit na bayanai.

SDA shine bayanan da SPI ke watsawa, wanda ke watsa bayanai guda 8 a lokaci guda. Ana nuna tsarin bayanan a cikin adadi mai zuwa:

Babban bit farko, watsa farko.
Don sadarwar SPI, bayanai suna da lokacin watsawa, tare da haɗin lokaci na lokaci-lokaci (CPHA) da polarity clock (CPOL):

Matsayin CPOL yana ƙayyade matakin halin rashin aiki na agogon serial synchronous, tare da CPOL=0, yana nuna ƙaramin matakin. CPOL Biyu watsa yarjejeniya
Tattaunawar ba ta yi tasiri sosai ba.
Tsayin CPHA yana ƙayyade ko agogon serial synchronous yana tattara bayanai a gefen tsalle na farko ko na biyu,

Lokacin da CPHL = 0, yi tarin bayanai a farkon canjin canji;
Haɗin waɗannan biyun ya zama hanyoyin sadarwa na SPI guda huɗu, kuma SPI0 ana amfani da ita a China, inda CPHL=0 da CPOL=0

ESP32 WROOM 32E M odule

Wannan ƙirar tana da guntu ESP32-DOWD-V3 da aka gina a ciki, Xtensa dual-core 32-bit LX6 microprocessor, kuma yana goyan bayan ƙimar agogo har zuwa 240MHz. Yana da 448KB ROM, 520KB SRAM, 16KB RTC SRAM, da 4MB QSPI Flash. 2.4GHz WIFI,
Bluetooth V4.2 da Bluetooth Low Power modules ana tallafawa. GPIO 26 na waje, katin SD na goyan baya, UART, SPI, SDIO, I2C, LED PWM, motor PWM, I2S, IR, counter pulse counter, GPIO, firikwensin taɓawa, ADC, DAC, TWAI da sauran abubuwan haɗin gwiwa.

Slot na MicroSD

Amfani da yanayin sadarwa na SPI da haɗin ESP32, goyan bayan katunan MicroSD na iyakoki daban-daban.

RGB Launi Uku Haske

Za a iya amfani da fitulun LED ja, kore, da shuɗi don nuna yanayin tafiyar da shirin.

Serial Port

Ana amfani da tsarin tashar tashar jiragen ruwa na waje don sadarwar tashar tashar jiragen ruwa.

Kebul zuwa Serial Port kuma danna Zazzagewa ta dannawa ɗaya

Babban na'urar ita ce CH340C, ana haɗa ƙarshen ɗaya zuwa kwamfutar USB, ƙarshen ɗaya yana haɗa zuwa tashar tashar ESP32, don cimma tashar tashar USB zuwa TTL.

Bugu da kari, ana kuma makala da’ira ta danna sau daya, wato lokacin da za a saukar da manhajar, za ta iya shiga yanayin da ake saukewa kai tsaye, ba tare da bukatar taba na waje ba.

Interface na baturi

Matsakaicin fil biyu, ɗaya don tabbataccen lantarki, ɗaya don ƙarancin lantarki, don samun damar samar da wutar lantarki da caji.

Cajin baturi da Da'irar Gudanar da Cajin

Babban na'urar ita ce TP4054, wannan da'irar zata iya sarrafa cajin baturi na yanzu, ana cajin baturin lafiya zuwa yanayin jikewa, amma kuma yana iya sarrafa fitar da baturin cikin aminci.

Maɓallin BOOT

Bayan an kunna samfurin nuni, dannawa zai rage IO0. Idan lokacin da aka kunna tsarin ko aka sake saitin ESP32, rage IO0 zai shiga yanayin zazzagewa. Wasu lokuta ana iya amfani da su azaman maɓalli na yau da kullun.

Interface Type-C

Babban tsarin samar da wutar lantarki da tsarin zazzagewar shirin na ƙirar nuni. Haɗa kebul ɗin zuwa tashar tashar jiragen ruwa da kewayar zazzagewar dannawa ɗaya, ana iya amfani da ita don samar da wutar lantarki, zazzagewa da sadarwar serial.

5V zuwa 3.3V Voltage Regulator Circuit

Babban na'urar shine ME6217C33M5G LDO mai daidaitawa.
Voltage regulator circuit yana goyan bayan 2A V ~ 6.5V m voltage shigarwar, 3.3V barga voltage fitarwa, kuma matsakaicin fitarwa na halin yanzu shine 800mA, wanda zai iya cika juzu'itage da bukatun halin yanzu na ƙirar nuni.

Sake saitin Maɓalli

Bayan an kunna tsarin nunin, latsawa zai ja maɓallin sake saiti na ESP32 ƙasa (tsarin yanayin yana jan sama), don cimma aikin sake saiti.

Resistive Touch Screen Control Circuit

Babban na'urar ita ce XPT2046, wacce ke sadarwa tare da ESP32 ta hanyar SPI.
Wannan kewayawa ita ce gada tsakanin allon taɓawa mai tsayayya da maigidan ESP32, wanda ke da alhakin watsa bayanan akan allon taɓawa zuwa maigidan ESP32, ta yadda za a sami haɗin kai na wurin taɓawa.

Fadada fil

An fitar da tashar shigar da tashar IO, GND, da fil ɗin 3.3V waɗanda ba a yi amfani da su akan tsarin ESP32 don amfani na gefe.

kewaye kula da hasken baya

Babban na'urar shine bututu mai tasirin filin BSS138.
Ɗayan ƙarshen wannan da'irar an haɗa shi da fil ɗin sarrafa hasken baya akan maigidan ESP32, ɗayan kuma an haɗa shi da mummunan sandar hasken baya na allo na LCD LED l.amp.
Fitin sarrafa hasken baya yana ja sama, hasken baya, in ba haka ba a kashe.

Mai magana da magana

Dole ne a haɗa tashoshin wayoyi a tsaye. Ana amfani da su don samun damar lasifika da lasifika.

Ƙarfin sauti ampkewaye kewaye

Babban na'urar ita ce sautin FM8002E ampFarashin IC.
Ɗayan ƙarshen wannan da'irar yana haɗe zuwa ESP32 audio DAC fitarwa fil kuma ɗayan ƙarshen yana haɗe da ƙaho.
Aikin wannan da'irar shine a tura ƙaramin ƙaho ko lasifika zuwa sauti. Don samar da wutar lantarki 5V, matsakaicin ƙarfin tuƙi shine 1.5W (Load 8 ohms) ko 2W (Load 4 ohms).

SPI na gefe dubawa

4-waya kwance ke dubawa. Fitar da fil ɗin zaɓin guntu da ba a yi amfani da shi ba da SPI ke dubawa wanda katin MicroSD ke amfani da shi, wanda za'a iya amfani dashi don na'urorin SPI na waje ko na yau da kullun na IO.

Cikakken bayani na zane-zane na ƙirar nuni

Nau'in C interface kewaye

A cikin wannan da'irar, D1 shine Schottky diode, wanda ake amfani dashi don hana halin yanzu daga juyawa. D2 zuwa D4 diodes ne na kariyar hawan lantarki don hana tsarin nunin lalacewa saboda wuce gona da iritage ko gajeriyar kewayawa. R1 shine juriya mai ja da ƙasa. USB1 bas ne na Type-C. Nau'in nuni yana haɗawa zuwa nau'in wutar lantarki na Type C, zazzage shirye-shiryen, kuma yana sadarwa ta USB 1. Inda + 5V da GND ke da ƙarfi vol.tage da sigina na ƙasa USB_D da USB_D+ sigina na USB daban-daban ne, waɗanda ake watsa su zuwa kebul na kan jirgin zuwa da'ira.

5V zuwa 3.3V voltage regulator circuit

A cikin wannan da'irar, C16 ~ C19 ita ce capacitor fil fil, wanda ake amfani dashi don kula da kwanciyar hankali na shigarwar vol.tage da fitarwa voltage. U1 shine 5V zuwa 3.3V LDO tare da lambar ƙirar ME6217C33M5G. Saboda yawancin da'irori akan tsarin nuni suna buƙatar samar da wutar lantarki na 3.3V, kuma shigar da wutar lantarki na Type Cinterface shine ainihin 5V, don haka vol.tagAna buƙatar da'irar juyawa mai gudanarwa.

Resistive touch allon kula da kewaye

A cikin wannan da'irar, C25 da C27 sune masu ƙarfin tacewa ta hanyar wucewa, waɗanda ake amfani da su don kula da shigar vol.tage kwanciyar hankali. R22 resistor ne mai cirewa da ake amfani dashi don kula da tsohowar yanayin fil mai girma. U4 shine XPT2046 iko IC, Ayyukan wannan IC shine samun haɗin haɗin gwiwa.tage darajar ma'anar taɓawa na allon taɓawa ta juriya ta hanyar X+, X -, Y +, da Y huɗu, sannan ta hanyar juyawa ADC, ana watsa darajar ADC zuwa maigidan ESP32. Maigidan ESP32 sannan ya canza ƙimar ADC zuwa ƙimar daidaitawar pixel na nuni. Fitin PEN shine fil ɗin katsewar taɓawa, kuma matakin shigarwa yana da ƙasa lokacin da abin taɓawa ya faru.

Kebul zuwa tashar jiragen ruwa na serial da da'irar zazzagewar dannawa ɗaya

A cikin wannan kewaye, U3 shine CH340C USB-to-serial IC, wanda baya buƙatar oscillator crystal na waje don sauƙaƙe ƙirar kewaye. C6 shine madaidaicin tacewa ta hanyar wucewa da ake amfani dashi don kula da shigar voltage kwanciyar hankali. Q1 da Q2 sune nau'in nau'in NPN, kuma R6 da R7 sune tushen triode masu iyakancewa na yanzu. Ayyukan wannan kewaye shine gane zuwa tashar USB-zuwa-serial da aikin zazzagewa. Siginar USB shigarwa da fitarwa ta hanyar UD+ da UD fil, kuma ana watsa shi zuwa maigidan ESP32 ta hanyar RXD da TXD fil bayan juyawa. Ka'idar zazzagewar dannawa ɗaya:

A. RST da DTR fil na CH340C babban matakin fitarwa ta tsohuwa. A wannan lokacin, Q1 da Q2 triode ba su kunne, kuma IO0 fil da sake saiti na babban iko na ESP32 ana ja su zuwa babban matakin.
B. RST da DTR fil na CH340C fitarwa ƙananan matakan, a wannan lokacin, Q1 da Q2 triode har yanzu ba a kunne ba, kuma IO0 fil da sake saiti na babban iko na ESP32 har yanzu ana ja su zuwa manyan matakai.

C. Fitin RST na CH340C ya kasance baya canzawa, kuma fil ɗin DTR yana fitar da babban matakin. A wannan lokacin, har yanzu ana yanke Q1, Q2 yana kunne, IO0 fil na ESP32 master har yanzu yana jan sama, fil ɗin sake saiti yana ja ƙasa, kuma ESP32 ya shiga cikin yanayin sake saiti.
D. CH340C's RST fil yana fitar da babban matakin, DTR fil yana fitar da ƙaramin matakin, a wannan lokacin Q1 yana kunne, Q2 yana kashe, sake saitin fil na ESP32 main control ba zai yi sauri ba ely ya zama babba saboda ana cajin capacitor da aka haɗa, ESP32 har yanzu yana cikin yanayin sake saiti, kuma IO0 fil ɗin nan take zazzage shi zai shiga, a wannan lokacin zazzagewa.

Ƙarfin sauti ampkewaye kewaye

A cikin wannan da'irar, R23, C7, C8, da C9 sun zama da'irar tacewa ta RC, kuma R10 da R13 sune masu daidaitawa na aiki. amplififi. Lokacin da ƙimar juriya na R13 ba ta canzawa, ƙarami ƙimar juriya na R10, mafi girman ƙarar mai magana ta waje. C10 da C11 su ne masu shigar da haɗin kai. R11 shine resistor mai cirewa. JP1 ita ce tashar ƙaho/lasifika. U5 shine FM8002E ƙarfin sauti ampFarashin IC. Bayan shigar da AUDIO_IN, siginar DAC mai jiwuwa ita ce ampan inganta ta hanyar FM8002E da fitarwa zuwa mai magana / mai magana ta VO1 da VO2 fil. SHUTDOWN shine fil ɗin kunna FM8002E. An kunna ƙananan matakin. Ta hanyar tsoho, ana kunna babban matakin.

ESP32 WROOM 32E babban da'irar sarrafawa

A cikin wannan da'irar, C4 da C5 sune capacitors filter filter, kuma U2 sune ESP32 WROOM 32E kayayyaki. Don cikakkun bayanai game da da'irar ciki na wannan ƙirar, da fatan za a duba takaddun hukuma.

Maɓallin sake saitin kewayawa

A cikin wannan da'irar, KEY1 shine maɓalli, R4 shine resistor-up, kuma C3 shine capacitor na jinkiri. Sake saitin ƙa'ida:

A. Bayan kunna wuta, C3 yayi caji. A wannan lokacin, C3 yayi daidai da gajeriyar kewayawa, fil ɗin RESET yana ƙasa, kuma ESP32 ya shiga yanayin sake saiti.

B. Lokacin da aka caje C3, C3 yayi daidai da buɗe da'ira, RESET fil yana jan sama, an gama saitin ESP32, kuma ESP32 yana shiga yanayin aiki na yau da kullun.
C. Lokacin da aka latsa KEY1, fil ɗin RESET yana ƙasa, ESP32 yana shiga yanayin sake saiti, kuma ana fitar da C3 ta hanyar KEY1.
D. Lokacin da aka fito da KEY1, ana caje C3. A wannan lokacin, C3 yayi daidai da gajeriyar kewayawa, RESET fil yana ƙasa, ESP32 har yanzu yana cikin yanayin SAKETA. Bayan cajin C3, fil ɗin sake saiti yana ja sama, an sake saitin ESP32 kuma ya shiga yanayin aiki na yau da kullun.

Idan Sake saitin bai yi nasara ba, ƙimar haƙurin C3 za a iya ƙarawa yadda ya kamata don jinkirta ƙaramar matakin matakin sake saitin fil.

Interface kewayawa na serial module

A cikin wannan da'irar, P2 shine wurin zama na 4P 1.25mm, R29 da R30 sune masu tsayayyar ma'auni na impedance, kuma Q5 shine bututun tasirin filin da ke sarrafa isar da wutar lantarki ta 5V.
R31 resistor ne mai cirewa. Haɗa RXD0 da TXD0 zuwa serial fil, kuma ba da wuta ga sauran fil biyun. Ana haɗa wannan tashar jiragen ruwa zuwa tashar tashar jiragen ruwa iri ɗaya kamar na USB-zuwa serial tashar tashar jiragen ruwa.

EX pand IO da da'irori na kewaye

A cikin wannan da'irar, P3 da P4 sune kujerun farar 4P 1.25mm. SPI_CLK, SPI_MISO, da SPI_MOSI fil suna raba tare da katin MicroSD SPI fil. Fil SPI_CS, IO35 ba sa amfani da na'urorin jirgi, don haka ana fitar da su don haɗa SPI, kuma ana iya amfani da su don IO na yau da kullun. Abubuwan da ya kamata a lura da su:

A. IO35 na iya zama fil ɗin shigarwa kawai.

Cajin baturi da kewaye sarrafa fitarwa

A cikin wannan da'irar, C20, C21, C22, da C23 sune capacitors filter filter. U6 shine sarrafa cajin baturi na TP4054 IC. R27 yana daidaita cajin baturi na yanzu. JP2 wurin zama na farar 2P 1.25mm, an haɗa shi da baturi. Q3 shine tashar P-tashar FET. R28 shine grid Q3 resistor. TP4054 yana cajin baturi ta hanyar fil ɗin BAT; ƙaramin juriya na R27, mafi girman cajin halin yanzu, tare da matsakaicin 500mA. Q3 da R28 tare sun zama da'irar fitar da baturi, Lokacin da babu wutar lantarki ta hanyar nau'in C, + 5V vol.tage shine 0, sa'an nan kuma an ja ƙofar Q3 zuwa ƙasa kaɗan, magudanar ruwa da tushen suna kunne, kuma baturi yana ba da wutar lantarki ga dukan tsarin nuni. Lokacin da aka kunna ta hanyar nau'in C, + 5V voltage shine 5V, sannan ƙofar Q3 tana da ƙarfin 5V, an yanke magudanar ruwa da tushen, kuma an katse wutar lantarki.

1 8P LCD panel waya walda dubawa

A cikin wannan da'irar, C24 shine madaidaicin tacewa, kuma QD1 shine 48P 0.8mm farar ruwa crystal allon waldawa. QD1 yana da siginar siginar allo na juriya, allon LCD voltage fil, fil ɗin sadarwa na SPI, fil ɗin sarrafawa da fil ɗin kewayawa na baya. ESP32 yana amfani da waɗannan fil don sarrafa LCD da allon taɓawa.

Zazzage maɓallin kewayawa

A cikin wannan da'irar, KEY2 shine maɓalli kuma R5 shine resistor. IO0 yana da girma ta tsohuwa kuma yana da ƙasa lokacin da aka danna KEY2. Latsa ka riƙe KEY2, kunnawa ko sake saiti, kuma ESP32 zai shigar da yanayin saukewa. A wasu lokuta, ana iya amfani da KEY2 azaman maɓalli na yau da kullun.

Da'irar gano ƙarfin baturi

A cikin wannan da'irar, R2 da R3 suna partal voltage resistors, da C1 da C2 sune masu iya tacewa. Baturin voltage BAT+ shigar da siginar yana wucewa ta cikin resistor resistor. BAT_ADC shine voltage darajar a duka ƙarshen R3, wanda ake aikawa zuwa ESP32 master ta hanyar shigar da fil sannan ADC ta canza shi don samun ƙarfin baturi.tage daraja. VoltagAna amfani da mai rarrabawa saboda ESP32 ADC yana canza matsakaicin 3.3V, yayin da jikewar baturi vol.tage shine 4.2V, wanda ba shi da iyaka. The samu voltage ninka ta 2 shine ainihin baturin voltage.

LCD kula da hasken baya

A cikin wannan da'irar, R24 shine juriya na gyara kuskure kuma ana riƙe shi na ɗan lokaci. Q4 shine bututun tasirin filin N-channel, R25 shine juzu'i na grid Q4, kuma R26 shine mai iyakance hasken baya na yanzu. Hasken baya na LCD LED lamp yana cikin yanayin layi ɗaya, madaidaicin sanda yana haɗa zuwa 3.3V, kuma an haɗa sandar mara kyau zuwa magudanar Q4. Lokacin da ikon sarrafawa LCD_BL yana fitar da babban voltage, ana kunna magudanar ruwa da sandunan tushe na Q4. A wannan lokacin, ƙananan igiya mara kyau na hasken baya na LCD yana ƙasa, kuma hasken baya LED lamp yana kunna kuma yana fitar da haske.

Lokacin da fil ɗin sarrafawa LCD_BL yana fitar da ƙaramin voltage, an yanke magudanar ruwa da tushen Q4, kuma an dakatar da hasken baya mara kyau na allon LCD, kuma hasken baya LED l.amp ba a kunna. Ta tsohuwa, hasken baya na LCD yana kashe.
Rage juriya na R26 na iya ƙara matsakaicin haske na hasken baya.
Bugu da kari, LCD_BL fil na iya shigar da siginar PWM don daidaita hasken baya na LCD.

RGB mai sarrafa haske mai launi uku

A cikin wannan kewaye, LED2 RGB ne mai launi uku lamp, kuma R14 ~ R16 ne mai launi uku lamp na yanzu iyakance resistor.
LED2 ya ƙunshi ja, kore, da fitilun LED masu shuɗi, waɗanda haɗin gwiwar anode ne gama gari.
IO16, IO17 da IO22 fil ɗin sarrafawa ne guda uku, waɗanda ke haskaka fitilun LED a ƙananan matakin kuma suna kashe fitilun LED a babban matakin.

MicroSD katin Ramin dubawa kewaye

A cikin wannan da'irar, SD_CARD1 shine ramin katin MicroSD. R17 zuwa R21 sune resistors masu ja don kowane fil. C26 shine capacitor tacewa. Wannan kewayon keɓancewa yana ɗaukar yanayin sadarwa na SPI. Yana goyan bayan ajiya mai sauri na katunan MicroSD.
Lura cewa wannan keɓancewa yana raba bas ɗin SPI tare da keɓantawar SPI.

Kariya don amfani da module nuni

Ana cajin tsarin nuni tare da baturi, mai magana da waje yana kunna sauti, kuma allon nuni yana aiki; a wannan lokacin, jimlar halin yanzu na iya wuce 500mA. A wannan yanayin, kuna buƙatar kula da matsakaicin halin yanzu da ke goyan bayan kebul na Type C da matsakaicin halin yanzu da ke goyan bayan ƙirar wutar lantarki don guje wa ƙarancin wutar lantarki.

Lokacin amfani, kar a taɓa LDO voltage mai tsarawa da sarrafa cajin baturi IC tare da hannuwanku don gujewa konewa ta yanayin zafi.
Lokacin haɗa tashar tashar IO, kula da yadda ake amfani da IO don guje wa rashin haɗin kai kuma ma'anar lambar shirin ba ta dace ba.
Yi amfani da samfurin a amince da hankali.

FAQ

Tambaya: Ta yaya zan shiga cikin sampda shirye-shirye da ɗakunan karatu na software?
- A: A sampAna iya samun shirye-shiryen da ɗakunan karatu a cikin 1-_Demo directory na bayanin albarkatun.
Tambaya: Wadanne kayan aiki ne aka haɗa a cikin software na kayan aiki?
- A: Software na kayan aiki ya haɗa da WIFI da APP na gwajin Bluetooth, kayan aikin gyarawa, USB zuwa direban tashar jiragen ruwa, ESP32 Flash download Tool software, software mai ɗaukar hoto, software na ɗaukar hoto, software na sarrafa hoto na JPG, da kayan aikin gyara tashar jiragen ruwa.

Takardu / Albarkatu

LCD wiki E32R28T 2.8inch ESP32-32E Nuni Module [pdf] Manual mai amfani
E32R28T, E32N28T, E32R28T 2.8inch ESP32-32E Nuni Module, E32R28T, 2.8inch ESP32-32E Nuni Module, ESP32-32E Nuni Module, Nuni Module, Module

Magana

Manual mai amfani

LCD wiki E32R28T 2.8inch ESP32-32E Nuni Module

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